The 310 gram metal and glass Zeiss ZM 85mm f/4 Tele-Tessar is a petite M-mount lens suitable for the Leica M Typ 240 or other M cameras. First class build quality, a nice little gem.
A first evaluation is on the Leica M Typ 240. In Guide to Leica:
This f/4 - f/16 aperture series includes HD and UltraHD images as well as the usual crops.
See also the same scene on the Sony A7R.